diff --git a/src/gallium/auxiliary/draw/draw_private.h b/src/gallium/auxiliary/draw/draw_private.h
index f30f9af388b..adde647c4c4 100644
--- a/src/gallium/auxiliary/draw/draw_private.h
+++ b/src/gallium/auxiliary/draw/draw_private.h
@@ -71,7 +71,7 @@ struct draw_pt_front_end;
  */
 struct draw_vertex_buffer {
    const void *map;
-   size_t size;
+   uint32_t size;
 };
 
 /**